• http://p.oin.name/work/these/

• http://www.yorku.ca/mack/mackenzie_chapter.html

• https://www.interaction-design.org/literature/book/the-glossary-of-human-computer-interaction/fitts-s-law
• https://www.cs.umd.edu/class/fall2002/cmsc838s/tichi/

• https://faculty.washington.edu/ajko/books/uist/

• https://pavelfatin.com/scrolling-with-pleasure/

• https://pavelfatin.com/typing-with-pleasure/